I tried with my version (1.37.826 Pro) and I have no problems in changing the equalizer frequencies.. and they correctly appear in the equalizer window :?
How did you change them?
I have made these changes:
1. Open up the properties window and select the Equalizer section
2. Select one by one all the frequencies, fill up the blank field with the value you want and press the Change button
3. Close BSplayer, then reopen it
All the frequencies are there for me.. I also tried to keep the default frequencies and added the ones you have selected and BSplayer responded perfectly..
I don't know which is your problem, maybe try to delete the BSplayer.USER_NAME.xml file present in the BSplayer folder, restart BSplayer and then repeat all the steps described above...
Have you updated your BSplayer version? In later versions there was been a lot of great improvements!